Polystyrene and polystyrene‐butadiene latexes stabilized by poly(N‐isopropylacrylamide)

Abstract Latexes stabilized by poly(N‐isopropylacrylamide) (polyNIPAM) were prepared by polymerizing NIPAM in the presence of polystyrene and polystyrene‐butadiene latex or by styrene emulsion polymerization in the presence of NIPAM. In 0.01 M CaCl 2 polyNIPAM stabilized latexes exhibited critical flocculation temperatures in the range 32–35°C, which is approximately equal to the lower critical solution temperature of polyNIPAM in water. …